It appears that in landscape mode in web app, events are not fired for touches happened at the top ~10 pixels. This is presumably where the status bar would reside if it was visible. The issue is not reproducible in portrait mode, nor in a regular native app.

Repro:

1. Visit https://ywh233.github.io/
2. Add the site to home screen
3. Open the site from the icon on home screen
4. Rotate phone to landscape
5. Tap `iOS unresponsive top area in landscape mode repro`
6. Try to tap `Tap here` a few times

Expected:

The dialog should pop up every single time you tap the link

Actual:

The dialog only pops up if you tap the lower part of the link. While in portrait mode, the link seems to be much more responsive.